Stump-puller.



- PATBNTED JULY 5, 1904. E. M. ERDMANN.

STUMP FULLER.

APPLICATION FILED MAR. 22. 1904.

no MODEL. z SHEETS-SHEET 1 M a g 0 No. 764,231. PATENT-ED JULY 5, 1904.

E. M. ERDMANN. STUMP FULLER.

APPLIOATION FILED MAR. 22. 1904.

no MODEL.

2 SHEETS-SHEET 2' Patented July 5, 1904.

PATENT OEEIcE.

EMIL M. ERDMANN, OF LONG PRAIRIE, lVIlNNESO'lTA.

STUMP-PULLER.

SPECIFICATION formingpart of Letters Patent No. 764,231, dated July 5, 1904. i

Application filed March 22, 1904.

Be itknown that I, EMIL M. ERDMANN, a citizen of the United States, residing at Long Prairie, in the county of Todd and State of Minnesota, have invented certain new and useful Improvements in Stump-Pullers, of which the following is a specification.

My invention relates to improvements in stump-pullers, its object being to provide an apparatus by which stumps of different sizes and characters may be easily pulled.

To this end my invention consists in the features of construction and combination hereinafter particularly described and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 is a plan view of my improved apparatus. Fig. 2 is a side elevation of the same. Fig. 3 is a detail of a clutch and actuating-lever forming part of my invention, and Fig. 4 is a detail view of a clutch member forming part of the invcntion.

In the drawings, 2 represents suitable uprights supported upon a horizontal base 3. Connecting the uprights are parallel horizontal bars 4 and 5. Journaled in the bars 1 and 5 are parallel vertical shafts 6 and 7, the shaft 7 carrying at its upper end a sweep 8.

Secured upon theshaft 6 are sprocket-gears 9, 10, 11, and 12 of varying sizes, and loosely mounted upon the shaft 7 are corresponding gears of varying sizes 13, 14:, 15, and 16. The

sprocket-wheels uponthe shaft7 are connected with the corresponding sprocket-wheels upon the shaft 6 by chains 17. Each of the sprocket-wheels 13 to 16, inclusive, carries a clutch member 18, with which is adapted to engage a clutch member 19, having sliding connection with the shaft 7, as by the feather 20. The clutch members 19 are actuated by levers 21, having fulcrum-support 22 upon the upright 24 and engaging at their inner ends with said slidable members. Loosely mounted upon the shaft 6 below the cross-bar 5 is a drum 25, carrying at its lower end a clutch member 26, engaging with a clutch member 27, secured upon the lower end of the shaft 6. The drum 25 is adapted to be released from the clutch member 27 by a lever 28, having fulcrum-support 29 in the horizon- Serial No. 199,342. (No modeli) tal beam 5 and engaging at its inner end with the drum.

The frame is braced by suitable outwardly-extending bracing-beams 30. The lower ends of the bracing-beams and the base of the frame are preferably embedded in the earth. A cable 31 has preferablydetachable connection 32 with the drum and runs to the stump. (Not shown.)

It will be'noted that the sprockets mounted upon the shafts 6 and 7 are of varying sizes, so that by the actuating of different ones of the sprockets 18 varying speeds of the drum 25 are secured. The lowermost sprockets, by which the highest speed is obtained, are preferably employed in taking up slack in the cable and the remaining pairs of sprockets in pulling stumps of varying sizes and character.

In operation the cable 31 is suitably attach ed to the stump and the proper lever 21 actuated to connect the shafts 6 and 7 through the desired sprockets. The shaft? then being turned through the medium of the sweep 8 will wind up the drum 25 and pull the stump from the ground. WVhen it is desired to unwind the cable, the lever 28 may be actuated to lift the drum 25 and allow it to turn freely upon the shaft 6.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A framework of the class described, consisting of upright and horizontal beams, vertical shafts journaled in said horizontal beams, a sweep secured upon one of said shafts, a series of sprockets of varying sizes loosely mounted upon said sweep-shaft, a correspondingseries of sprockets of varying sizes mounted upon the other shaft, chains connecting said sprockets, a clutch connection between each of said loosely-mounted sprockets and the sweepshaft, and an actuating-lever for each of said clutches.

2. An apparatus-of the class described, comprising in combination, a frame consisting of upright and horizontal beams, a driving and driven shaft supported ,in said horizontal beams, a sweep carried by said driving-shaft, V

a series of s 'jrocketwheels of varying sizes secured upon said driven shaft, a series of sprocket-wheels loosely mounted upon said driving-shaft, sprocket-chains connecting said sprocket-Wheels, a clutch member carried by each of said loose sprocket-Wheels, slidable clutch members carried by said driving-shaft adjacent to each of said sprocket- Wheels, separate actuating-levers for said slidable clutches, and a Winding-drum carried by said driven shaft.

3. An apparatus of the class described, comprising in combination, upright and horizontal beams, and bracing-beams therefor, driving and driven vertical shafts journaled in said horizontal beams, a sweep carried by the driving-shaft, a series of gears of varying sizes secured upon said driven shaft, a series of gears of varying sizes loosely mounted upon said driving-shaft, driving connections be- EMIL M. ERDMANN.

WVitnesses:

H. S. JoHNsoN, EMILY F. OTIS. 

